Hand drill and screw driver



S OLZOWIEC HAND DRILL AND SCREW DRIVER Filed July 28, 1924 jdiiiii'iim' w Y W////////// 45 49 50 amqhwaz m BY ATTORNEY Patented Dec. 22, 1925.

i [TED 1 E15 EN- T OFF I (.1 E

STANISZLAW-OL'SZO'WIEC, oF'N'Ew WATERFORD, NovA SGOTIA, CANADA.

HANn' DRILL AND SCREW DRIVER.

i Application filed'July 28,1924. Serial No; 728,558.

To all whom'z't may concern:

'-Be it known that I, STANrszLAw Onszowrite, citizen of Poland,residing at New Waterford, "inthe Province of Nova Scotia and Dominion of Canada, have invented certain new and useful Improvements 111 Hand "Drills and Screw Drivers, of which the following is a specification.

This invention relates generally to a hand "by'in either direction as may be desired.

For further comprehension of the invention, and of the objects and advantages thereof, reference will be had to the following'description and accompanying drawing,

' and to the appended claims in which the various novelfe'atures I of the invention are "more particularly set forth.

Y Fig. 1 of'the drawingis a side view of my improved implement. Fig. 2is a part side view andpart longitudinal sectional View.

Fig. 3 is a transverse sectional'view taken on the line 33 of Fig. 2.

Fig. 4 is a detail view of one of the bits which may be used in my improved implement.

As here embodied my improved implement comprises an elongated body 10 of circular cross section, and which may decrease in diameter from the front to the rear end thereof. Fixed permanently to this body, at the rear end thereof, is a breastplate 12 which latter is formed on its rear face with a socket 13 which removably receives the forward end of a stem or rod 14 which has a part-spherical knob 15 on its rear end for hand engagement. The stem 14 may be secured in the socket 13 by means of a screw 16 threaded through the side of the member 10.

Formed on the body 10 are the ratchet toothed elements 18 and 19 which are spaced therealong from one another, and which have the teeth thereof facing in relatively opposite directions. Freely surrounding these ratchet elements, and held against longitudinal movement on'the member 10 by means of the shoulders 20 thereon, are the rings or collars 21 and 22 which are fixed on the ends of therespective arms 23, 24 which extend transversely to the member 10. The

' outer ends of these arms are rigidly united by the'tubular member 25 on which is freely mounted a handle grip 26.

The ratchet elements 18 and 19 are adapted to be engaged by the pawls 28 and '29 respectively which are slidable in suitable longitudinal passages 30 in the arms and which are urged into engagement with the said ratchet elements by means of springs 31 located in the said passages andbearing on the rear ends of the pawls. 'Means are preferably provided whereby one pawl is moved out ofengagement with its ratchet element.

As here shown a rock-lever 35 extends through the tube 25 and is fulcrumed midway between its ends in said tube as at 36 this lever being connected at its ends to the stems 38 and 39 which project from the pawls 28 and 29 through the passages in the arms 23, 24 so that the two stems are caused to move oppositely in unison with one another when the lever 18 rocked. Formed on the stem 38 1s a lateral projection 40 which projects through a longitudinal slot- 41 in the arm 23 and through which is threaded a screw 42 which is mounted in a lug 43 projecting from the free end of the arm, screw being arranged for free rotation but held against longitudinal movement on said arm, the screw being provided with a knurled head 44 for adjustment purposes. The ends of the stems 38, 39 which engage the pawls 28, 29 are connected thereto by a lost motion connection so as to permit of sufficient independence of each pawl to allow it to ride backward over its ratchet element. As here shown the stems are diminished in diameter and engage in borings such as 47 in the rear ends of the pawls, these stem ends having fixed therein the transverse pins 48 which project into short longitudinal slots 49 in the pawls. By this arrangement the pawl in engagement with the ratchet element is allowed to ride over the same when traveling backward, while at the same time permitting the pawl to be drawn from engagement with the ratchet element by adjusting the screw 42.

In the front end of the member 10 a socket 50 is formed and is adapted to receive the rear en-dsof the bits, these rear ends of the bits being formed with transverse openings such as 51, while the member 10 is formed with complementary openings, a key 52 b ing passed through these openings to lock the bit in place. This key may be attached to the member to prevent loss by means of a chain 53.

In Fig. l of the drawing the bit 55 is in the form of a screwdriver, while in Fig. 2 the bit 55 is in the form of socket nut. In Fig. i I have shown a bit 55 in the form of a drill, and it will be understood that I may use any desired type of bit in my improved implement.

ld hile I have illustrated and described a preferred embodiment of my invention it is to be understood that I do not limit myself to the precise construction herein shown and that various changes and modifications might be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Having thus described my invention what I claim as new and desire to protect by Letters Patent of the United States is as follows 1. A device of the class described comprising an elongated body member adapted to receive a bit at one end, a pair of oppositely facing ratchet elements spaced along said member, freely surrounding said ratchet member, hollow arms projecting from said rings transversely to the said member, a tube rigidly connecting the outer ends of said arms, pawls slidable in the said arms and engaging the said ratchet elements, a rock-lever 'lulcrumed in said tube, stems connected at their forward ends to said pawls by a lost motion connection and at their rear ends to said lever, and means for setting said lever at diilerent adjusted positions.

2. A device of the class described comprising an elongated body member adapted to receive a bit at one end, a pair of oppositely facing ratchet elements spaced along said member, rings freely surrounding said ratchet member, hollow arms projecting from said rings transversely to the said member, a tube rigidly connecting the outer ends of said arms, pawls slidable in the said arms and engaging the said ratchet elements, a rock-lever tulcrumed in said tube, stems connected at their forward ends to said pawls by a lost motion connection and at their rear ends to said lever, and means for setting said lever at different adjusted positions, comprising a screw mounted in one of the arms and threaded through a projection from one of said stems.

3. A device of the class described com prising an elongated body member adapted to receive a bit at one end, a pair of oppositely facing ratchet elements spaced along said member, rings freely surrounding said ratchet member, hollow arms projecting from said rings transversely to the said member, a tube rigidly connecting the outer ends of said arms, pawls slidable in the said arms and engaging the said ratchet elements, a rock-lever tulcrumed in said tube, stems connected at their forward ends to said pawls by a lost motion connection and at their ends to said lever, and means for setting said lever at difierent adjusted positions, and springs surrounding said stems and bearing on said pawls to urge the latter toward the said ratchet elements.

In testimony whereof I have aflixed my signature.

STANISZLAVV OLSZOIVIEC. 

